Home / 3,139.73-4,332.79-1,813.40

Finding the Fourth Proportional to 3,139.73, 4,332.79 and 1,813.40

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Solution

The fourth proportional to 3,139.73, 4,332.79 and 1,813.40 is: 2,502.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.73 : 4,332.79 = 1,813.40 : x
  2. Step 2: Convert to fraction form
    3,139.73/4,332.79 = 1,813.40/x
  3. Step 3: Cross multiply
    3,139.73x = 4,332.79 × 1,813.40
  4. Step 4: Simplify right side
    3,139.73x = 7,857,087.68
  5. Step 5: Solve for x
    x = 7,857,087.68/3,139.73
  6. Step 6: Final answer
    x = 2,502.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.